Sui dao shi yüan di yi ji qi ta yu guan jian zhu di yi wen
By: Shidifu Pake ; [fan yi Zhu Mengxun ; ze ren bian ji Qi Li, Wang  Qiongfen].
Contributors: Qi, Li.
Series: Wo xiang zhi dao wei shen mo -- 9
Publisher: Xin ya wen hua shi yeh yu xian gong si
Published: 1996
Place of publication: Xianggang
Language: chi
Number of pages: 32
Subjects: Structural engineering -- Juvenile literature.; Earthmoving machinery -- Juvenile literature.; Structural engineering.; Buildings.; Earthmoving machinery.; Questions and answers.
Genres: Juvenile literature.
Other titles: Sui dao shi yuan di yi ji qi ta you guan jian zhu ju di yi wen
Work titles: I wonder why tunnels are round and other questions about building.
Notes: Includes index.

Translation of: I wonder why tunnels are round and other questions about building.